Loom attachment



19401 B. w. GREEN ETAL, 2,226,283

LOOM ATTACHMENT Filed May 11, 1940 2 Sheets-Sheet l Zmventorifi BERRY W.GREEH HUBERT' HHLLEY attorney;

B. w. GREEN EIAL 2,226,283

LOOM ATTACHMENT Filed May 11, 1940 Dec. 24, 1940.

2 Sheets-Sheet 2 3nnentor8.

0,, BERRY W GREEN Huasa-r L. "ALLEY Gttorneg! Patented Dec. 24, 1940PATEN QFFWB Loom ATTACHMENT v i Berry TV. Green and Hubert L. NalleyEasley, S. C. V

I y r-zlipplication May 11, 1940, Serial No. 334,542

3'C laims. (o1. lat-seer I I v suitable heddles I8whereasthe shed I1 isacme This invention relates to a loom attachment and more especially toa compression brake spring which serves to apply brakeswhen the shipperlever is actuated to stop the loom.

I-leretofore, much difficulty has been experienced with conventionaltension springs commonly used for this purpose, in that-the springsoften crystallize and break thus necessitating replacement; Also thetension springs oftenlose some of their resiliency after continued use,with the result that adjustment is-necessaryin order to produce thedesired uniform tension.

'It is an object of this invention to provide a compression spring forapplying loom brakes which spring is normally in a compressed posi tionduring the operation of the loom, and which is in an expanded positionwhenthe loom is stopped and the brakes are' applied.

It is another object of this invention to provide a spring of theclassdescribed, with means for adjusting the amount of compression orresistance that the spring oifers, when in a compressed position. Byproviding this adjustment an ample allowance for the. fatigue in thespring can be made from time to time,-thereby maintaining asubstantially constant force stored in the spring when it .iscompressed.-

Another object o-fthis invention is to, provide .a compression springwhich encircles a rod and 30 which has one end thereof normally forcingthe .rod against the brake applying mechanism. The

other end .of the spring abuts a stationary mem ber attached to theloom, said stationary member being slidably penetrated-by the other endof the proper position and also serves to apply the brakes when it isreleased by the action of the shipper lever. I I

Some of the objects of the invention having been stated, other objectswill appear as the description proceeds, when taken in connection withthe accompanying drawings, in which Figure l-is 'a side elevation of aloomshowing the improved attachment applied thereto;

Figure 2.is an elevation looking at the right hand side of Figure 1;

Figure 3 is a sectional plan view taken along the line 3-3 of Figure 2;-a 4 r Figure 4-is an isometric view showing the loom attachment removedfrom the loom f I Figure 5 is a view similar to the left-hand portion ofFigure 2, but showing a slightly modified form of the invention. l

Referring more specifically to the drawings, the numeral denotes a sideframe of aloomupon which is-mounted a-warp beam H from which warp I2 isdrawn. This warp passes upwardly over a roller l4 and thence across theloom beneath rod I5 at which point it is separated into sheds l6 and H.The shed I6 is actuated by the rod. The rod, therefore holds the springin ate d by similar heddles l9. The warp passes .through'reed in aconventional lay 2L Upon the lay a shuttle, not shown, is adaptedtoreciprocate back and forth between the sheds to form cloth 22 in aconventional manner. Y

The lower portion of the lay 2| has a dagger 25 pivoted thereto and'thisdaggeris adapted to be maintained in an elevatedposition as shown inFigure 1, when the same is disposed over frog steel 26 in frog 21. Frog2'! is slidably mounted upon. the loom frame II], but it is notdisturbed unless some faulty operation of the loom'allows the free endofthe dagger 25 to be in a lowermost position to engage the same duringvthe beat-up stroke of the loom lay. I

The frog 2! has secured thereto as at 30, a plate member 3|, one end ofsaidmember being adapted to be engaged by the lower end of a knock-offlever 32 which lever is pivoted as at 33 to :the side of the loom frame.The upper end of the knock-off lever engages thev sideof shipper'lever-34, said shipper leverbeing adapted'to penetrate a slot 35 in casting36, which casting is secured to the loom frame. The intermediate portionof the shipper lever is pivoted as at 31 to a bracket 38 and thisbracket is. also' secured tothe loom frame. I

- .During normal operation, that is whenicloth isbeing woven, theshipper lever 34 is adapted .to3rest in a notch 35a which is formed inthe sidewall of the-slot 35. Upon the shuttlebe- I coming'absent in theshuttle box during the beatup stroke of the-loom lay, the-free endofdagger 25 will-not be raised to the position shown in Figure'l, but willbe moved from left to right in a lowered position thereby causingitsfree end to engage the fro steel -26. This engagement will cause thefrog 21 and its associated plate 3|- to also move to the right to causethe knock-01f lever 32 to be rotated in a counter-clockwise man- 'ner inFigure 1. This rotation of the knock-off lever will move the upper endof" the shipper lever 34 outof the notch 3511- after which thefleverwill assume the dotted lineposition as shown in Figures2and3.-

The shipper lever 34v has a-projection 40,. integral therewithysaidprojection being adapted to supportthe free end-of a lever 4|. Lever Mis a part of the brake applying mechanism-and is pivoted as at 42 to theside ofthe loom frame I0, said leverhaving an upwardly extendingprojection 43 integral therewith which is adapted to contact a bracket44 on horizontally disposed rod- 45. The right hand end of the rod 45(Figure 1) has a slot45 therein, which slot is penetrated by,a bolt orscrew 41. This screw 41 secures the right hand end ofv the rod 35 to thefrog 21; The purpose of providing the slot 46 isto alloW a limitedamount of horizontal-move ment of the rod 45 without affecting themovement of the frog. The left-hand end of the rod 45 is pivoted as at45a to the upper portion of brake lever 48, said lever having its lowerend pivoted as at 49 to the loom frame.

The upper portion of the brake lever 48 has a brake lining 50 secured toone side thereof which normally is slightly removed from the peripheryof wheel 5| on crank shaft 52. Upon the release of the shipper lever 35in the manner just described, causing it to assume dotted line positionin Figures 2 and 3, the lever 4| is likewise released and allowed torotate downwardly in a clockwise manner about its pivot point 42. Therotation of the lever 4| and projection 43 in a clockwise manner, willsimultaneously cause the bracket 44 and the rod 45 to move to the rightwhich in turn will cause the upper end of the brake lever 48 to move thelining 50 into engagement with the periphery of the wheel 5| to applybrakes.

The structure thus far described is conventional in loom structure, butit is thought necessary to describe this much of the old structure inorder to more clearly illustrate the present invention. The presentinvention comprises a compression spring assembly for causing the freeend of lever 4| to follow the projection 40 downwardly when the shipperlever 34 is unlatched. By referring to Figures 2 and 3, it will be seenthat the bracket 36 has a projection 55 extending therefrom and thisprojection has a horizontally disposed slot 56 therein. The slot 56 ispenetrated by a suitable bolt 51, said bolt also penetrating a hole 58in the upper end of a bracket or fitting 59. A vertically disposed holeis provided in the bracket 59 for slidably confining the upper end of arod 60 therein, said rod 60 extending downwardly and having a forkedportion 6| integral with the lower end thereof for resting upon theupper side of the free end of lever 4|. Also secured around the rod 60and directly above the forked portion 6| is a collar 63. This collar isadjustably secured in position by means of a suitable set screw 64.Between the bracket or fitting 59 and the upper side of the collar 63 acompression spring 65 is mounted around the rod 60. When the shipperlever 34 is released the spring 65 normally forces the collar 63 and therod 60 downwardly to face the fork 6| against the free end of the lever4| thereby causing the lever to rotate in a clockwise manner about pivotpoint 42 (Figure 1), which, in turn, will move the rod 45 and the upperend of brake lever 48 to the right to apply brakes to the wheel 5|.

When it is desired to adjust the amount of compression offered by thespring 65, it is only necessary to loosen the set screw 64 andreposition the collar 63 on the shaft 60.

Figure 5 shows a slightly modified form of the invention in which thecompression brake spring assembly comprises a bracket 10 having avertically disposed slot H in the upper end thereof, said slot beingpenetrated by bolt 12 to secure the same to portion 55. The bracket alsohas the upper end of a rod 13 slidably mounted therein and the lower endof this rod has a fork l4 disposed on the upper side of lever 4|. Acollar 15 is integrally formed on the lower portion of rod 13 forsupporting the lower end of a compression spring 16, which spring isdisposed around the intermediate portion of the rod and has its upperend engaging bracket 15. In order to adjust the initial resistanceoffered by the spring, the bolt 12 must be loosened so that the bracketcan be moved up or down to the position desired.

It is therefore seen that we have provided a simple and inexpensiveapparatus for supplying the necessary force to the brake mechanism of aloom. This mechanism is simple in operation, low in cost, easy tomanufacture and has many advantages over the present type of tensionspring employed for this same purpose.

In the drawingsand specification, there has been set forth a preferredembodiment of the invention, and although specific terms are employedthey are used in a generic and descriptive sense only and not forpurposes of limitation the scope of the invention being set forth in theappended claims.

We claim:

1. In a loom having a brake mechanism and a shipper lever having aprojection thereon disposed in the path of the brake mechanism when theshipper lever is in latched position for preventing operation of thebrake mechanism while the loom is in operation, means for holding thebrake mechanism in engagement with the projection on the shipper levercomprising a stationary fitting secured to the loom frame, a rod havingone end thereof slidably mounted in said fitting, and having a fork onits other end engaging the brake mechanism, and a compression springdisposed around the rod and normally forcing the same against said brakemechanism, whereby the shipper lever will be moved and the brakemechanism will be applied by the spring when the shipper lever isunlatched.

2. In a loom having a brake mechanism and a shipper lever having aprojection thereon disposed in the path of the brake mechanism when theshipper lever is in latched position for preventing actuation of thebrake mechanism while the loom is in operation, means for holding thebrake mechanism in engagement with the projection on the shipper levercomprising a stationary fitting secured to the loom frame, a rod havingone end thereof slidably mounted in said fitting, and having its otherend engaging the brake mechanism, a compression spring disposed aroundthe rod and normally forcing the same against said brake mechanismwhereby the shipper lever will be moved and the brake mechanism will beapplied by the spring when the shipper lever is unlatched, and means forvarying the amount of resistance offered by the spring.

3. In a loom having a brake mechanism and a shipper lever having aprojection thereon disposed in the path of the brake mechanism when theshipper lever is in latched position for holding the brake mechanism ininoperative position while the loom is in operation, means for holdingthe brake mechanism in engagement with the projection on the shipperlever comprising a stationary fitting secured to the loom frame, a rodhaving a collar adjustably mounted thereon, one end of said rod beingslidably mounted in said fitting and its other end being engaged by thebrake mechanism, a compression spring disposed around the rod betweenthe collar and the fitting for normally forcing the lower end of the rodin engagement with the shipper lever, whereby the shipper lever will bemoved and the brake mechanism will be applied by the spring when theshipper lever is unlatched.

BERRY W. GREEN. HUBERT L. NALLEY.

